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Osa Weather (Next 3 days): The snow forecast for Osa is: Light rain (total 5.0mm), mostly falling on Thu night. Freeze-thaw conditions (max 8°C on Thu morning, min 0°C on Tue night). Winds increasing (calm on Wed night, fresh winds from the NW by Thu night).
Osa Weather (Days 4-6): Mild with moderate rain (total 16.0mm) on Sat night, Becoming colder with a light covering of snow, mostly falling on Sun afternoon. Freeze-thaw conditions (max 4°C on Sat afternoon, min -4°C on Fri night). Winds increasing (calm on Sat morning, strong winds from the WNW by Sun afternoon).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | -1 |  | ||||
| Bottom Lift: | 0 | |
Latest snow reports near Osa:
Tuesday 9 | Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | | |  | |  | |  |  |  |  | | |  |  |  | |  | |
clear | clear | clear | cloudy | cloudy | cloudy | cloudy | light rain | snow shwrs | light snow | snow shwrs | clear | clear | some clouds | mod. rain | mod. rain | light snow | light snow | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | 2 | 1 | |
— | — | — | — | — | — | — | 2 | 3 | — | — | — | — | — | 8 | 8 | — | — | |
max °C | 5 | 5 | 1 | 6 | 6 | 4 | 8 | 8 | 5 | 0 | -1 | -3 | 3 | 4 | 2 | 3 | 1 | 0 |
min °C | 3 | 1 | 0 | 4 | 3 | 3 | 6 | 6 | 0 | 0 | -3 | -4 | 0 | 0 | 0 | 2 | 1 | 0 |
1 | -2 | -3 | 1 | 1 | 3 | 3 | 2 | -6 | -5 | -9 | -9 | -2 | -2 | -2 | -3 | -6 | -7 | |
73 | 60 | 67 | 55 | 55 | 45 | 53 | 82 | 81 | 98 | 85 | 75 | 53 | 54 | 76 | 98 | 87 | 87 | |
1000 | 1200 | 1100 | 1350 | 1500 | 2150 | 1900 | 1950 | 1200 | 700 | 550 | 0 | 900 | 1100 | 1250 | 1700 | 850 | 650 | |
 | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — | 7:09 | — | — | 7:09 | — | — |
 | — | 5:00 | — | — | 5:00 | — | — | 5:00 | — | — | 5:00 | — | — | 5:00 | — | — | 5:00 | — |
Light rain (total 5.0mm), mostly falling on Thu night. Freeze-thaw conditions (max 8°C on Thu morning, min 0°C on Tue night). Winds increasing (calm on Wed night, fresh winds from the NW by Thu night).
Mild with moderate rain (total 16.0mm) on Sat night, Becoming colder with a light covering of snow, mostly falling on Sun afternoon. Freeze-thaw conditions (max 4°C on Sat afternoon, min -4°C on Fri night). Winds increasing (calm on Sat morning, strong winds from the WNW by Sun afternoon).
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 4 Dec 2025 |
| Snow Alerts | Create Alert |
0.1 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.3 | Powder days Fresh snow, limited sun, any wind. |
0.1 | Bluebird days Average snow, mostly sunny, light wind. |
The above table gives the weather forecast for Osa at the specific elevation of 700 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Osa. To access the weather forecasts for the other elevations, use the tab navigation above the table. For a wider view of the weather, check out the Weather Map of Japan.
Click here to read further information on freezing levels and how we forecast our temperatures.
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